Fan



FIG. 1 is a perspective view of a fan showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a side view of a portion of the design of FIG. 1;

FIG. 6 is an alternate perspective view of a fan showing our new design; and,

FIG. 7 is a top view of the design of FIG. 6. 

We claim the ornamental design for a fan, as shown and described. 